Bus Bar for Use in Electric Motor

• US 20140091655A1
• Filed: 09/13/2013
• Published: 04/03/2014
• Est. Priority Date: 09/28/2012
• Status: Abandoned Application

• Current Assignee: Hayashi Industries Co. Ltd.
• Original Assignee: Hayashi Industries Co. Ltd.
• Inventors: Kajita, Ko, Hobo, Takahiko
• Application Number:
  US14/026,683
• Publication Number:
  US 20140091655A1
• Time in Patent Office: Days
• US Class Current: 310/71
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132

Abstract

A bus bar that can be manufactured easily as a part of an electric motor and, as a result, enables manufacturing the electric motor easily and inexpensively. The bus bar is configured to supply power to a plurality of coils of an electric motor and/or ground the coils in assemblage, in which a plurality of folded portions each of which includes three or a larger odd number of overlapping portions are formed on a conductor material having a predetermined length. The bus bar enables forming an insertion space at a predetermined position of each of the folded portions in which a terminal of each of the coils can be inserted so that each of the terminals is inserted into this insertion space and fixed in order to be electrically and directly fixed to the bus bar.

Claims

1. A bus bar for use in an electric motor configured to supply power to a plurality of coils of the electric motor and/or ground the coils in assemblage, wherein a plurality of folded portions each of which includes three or a larger odd number of overlapping portions are formed on a conductor material having a predetermined length so that at least a terminal of each of the coils can be electrically and directly fixed to a predetermined position of each of the folded portions.

2. The bus bar for use in an electric motor according to claim 1, wherein an insertion space in which the terminal of the coil can be inserted is formed in at least one of the odd number of overlapping portions.

3. The bus bar for use in an electric motor according to claim 2, wherein at least one twisted portion is formed on the conductor material between the folded portions and an opening direction of the insertion space in one of the two folded portions adjacent to this twisted portion on both sides is changed with respect to that of the insertion space in the other folded portion adjacent to this twisted portion.

4. The bus bar for use in an electric motor according to claim 1, wherein the conductor material is a flat material having a width-to-thickness ratio of 2:

1 to 20;

1 and each of the overlapping portions is given by folding this flat material at a width-directional kinked line thereof.

5. The bus bar for use in an electric motor according to claim 1, wherein the conductor material is a flat block on a surface of which an insulating film is formed.

6. The bus bar for use in an electric motor according to claim 1, wherein the conductor material on which the folded portion is formed is inserted into an insulating tube.

7. The bus bar for use in an electric motor according to claim 1, comprising one set of four kinds of bus bars:

a U-phase bus bar, a V-phase bus bar, a W-phase bus bar, and a neutral-phase bus bar.